CN117753527B - Air mill - Google Patents
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- CN117753527B CN117753527B CN202410194501.1A CN202410194501A CN117753527B CN 117753527 B CN117753527 B CN 117753527B CN 202410194501 A CN202410194501 A CN 202410194501A CN 117753527 B CN117753527 B CN 117753527B
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- 239000000463 material Substances 0.000 claims description 43
- 238000012937 correction Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 14
- 239000002245 particle Substances 0.000 description 10
- 230000005484 gravity Effects 0.000 description 8
- 238000009826 distribution Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- -1 biochemistry Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides an air mill, comprising: the device comprises a shell, a feed pipe, a first air inlet pipe and a second air inlet pipe; the shell is provided with a cylindrical inner cavity with an axis extending along the vertical direction, a feeding hole is arranged on the side wall of the shell, and the feeding pipe extends into the inner cavity through the feeding hole; the side wall of the shell is provided with a first air inlet hole, the position of the first air inlet hole is lower than that of the feeding hole in the vertical direction, and the first air inlet pipe stretches into the inner cavity through the first air inlet hole; the side wall of the shell is provided with a second air inlet hole, the position of the second air inlet hole is Yu Jinliao holes high in the vertical direction, and the second air inlet pipe extends into the inner cavity through the second air inlet hole. The crushing effect can be improved, the phenomenon of uneven granularity of the product is avoided, and the quality of the product is ensured.
Description
Technical Field
The invention relates to the technical field of air flow grinding, in particular to an air flow grinding machine.
Background
As an advanced superfine grinding device, the jet mill has wide application in the industries of medicine, biochemistry, ceramics, lithium battery and the like. Currently, most of air jet mills adopt a mode that a feeding pipe is arranged at the upper part of a nozzle, and the design aims to introduce the material into high-speed air flow by utilizing the gravity of the material so as to crush the material. However, there are certain limitations to this manner of feeding and aerating. In the actual working process of the jet mill, a part of materials move downwards under the action of gravity, and the part of materials can be sucked into a crushing area by high-speed airflow so as to realize efficient crushing; in addition, the particle size is relatively small, the specific gravity is small, and the material is influenced by macroscopic upward flowing air flow in the jet mill to move upwards, so that the material cannot reach a nozzle supersonic speed crushing area, the crushing effect of the jet mill is reduced, uneven particle size distribution of a product is possibly caused, and the quality of the product is further influenced.
Disclosure of Invention
The invention aims to provide an air mill which can improve the crushing effect, avoid the phenomenon of uneven granularity of products and ensure the quality of the products.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A gas mill, comprising: the device comprises a shell, a feed pipe, a first air inlet pipe and a second air inlet pipe;
The shell is provided with a cylindrical inner cavity with an axis extending along the vertical direction, a feeding hole is formed in the side wall of the shell, and the feeding pipe extends into the inner cavity through the feeding hole so that external materials can enter the inner cavity through the feeding pipe;
the side wall of the shell is provided with a first air inlet hole, the position of the first air inlet hole is lower than that of the feeding hole in the vertical direction, and the first air inlet pipe stretches into the inner cavity through the first air inlet hole so that external air can enter the inner cavity through the first air inlet pipe;
the side wall of the shell is provided with a second air inlet hole, the position of the second air inlet hole is higher than that of the feeding hole in the vertical direction, and the second air inlet pipe stretches into the inner cavity through the second air inlet hole, so that external air can enter the inner cavity through the second air inlet pipe.
Preferably, the number of the first air inlets is more than two, the more than two first air inlets are sequentially and uniformly distributed along the circumferential direction of the inner cavity, and the number of the first air inlets is equal to the number of the first air inlets and corresponds to one;
And/or the number of the second air inlets is more than two, the more than two second air inlets are sequentially and uniformly distributed along the circumferential direction of the inner cavity, and the number of the second air inlets is equal to the number of the second air inlets and corresponds to one.
Preferably, the device further comprises a nozzle connected to one end of the first air inlet pipe extending into the inner cavity, so that the air in the first air inlet pipe can be sprayed into the inner cavity through the nozzle.
Preferably, on a projection perpendicular to the axis of the inner cavity, the length of the feed pipe extending into the inner cavity is L1, and l1= (a+1.9×m 2.81) ×d, where M is a mach number corresponding to the flow rate of the gas entering the inner cavity through the first gas inlet pipe, d is an equivalent diameter of the injection hole on the nozzle, a is a correction value, and 3.ltoreq.a.ltoreq.7.
Preferably, in a section passing through the axis of the feed pipe, the axis of the feed pipe forms an angle alpha with the side wall of the inner cavity where the feed hole is located and below the feed hole, and the angle alpha is 15 DEG.ltoreq.alpha.ltoreq.90 deg.
Preferably, when the angle of repose of the material entering the cavity is less than or equal to 30 DEG, 30 DEG is less than or equal to
α≤90°；
When the repose angle of the material entering the inner cavity is larger than 30 degrees, the angle alpha is larger than or equal to 15 degrees and smaller than or equal to 60 degrees.
Preferably, an intersection point of the axis of the feeding pipe and the curved surface where the side wall of the inner cavity is located is set to be P, an intersection point of the axis of the first air inlet pipe and the curved surface where the side wall of the inner cavity is located is set to be P1, a distance between the point P and the point P1 in the vertical direction is set to be H1, and h1=b×l+c×y, wherein Y is the mohs hardness of a material entering the inner cavity, b is a first statistic value, L is the diameter of the inner cavity, and c is a second statistic value.
Preferably, Y is 1-9 and b is 0.05-0.4;
when Y is more than or equal to 1 and less than or equal to 5, c is more than or equal to 3 and less than or equal to 6, and when Y is more than or equal to 5 and less than or equal to 9, c is more than or equal to 0.05 and less than or equal to 3.
Preferably, the intersection point of the axis of the second air inlet pipe and the curved surface where the side wall of the inner cavity is located is P2, and the distance between the point P and the point P2 in the vertical direction is H2, wherein H1 is less than or equal to H2 and less than or equal to 4 multiplied by H1.
Preferably, on a projection perpendicular to the axis of the inner chamber, a straight line passing through the point P1 and tangential to the inner chamber forms an angle beta with the axis of the first air inlet pipe, and the angle beta is more than or equal to 5 degrees and less than or equal to 45 degrees.
According to the air mill, the second air inlet hole is formed in the side wall of the shell, the position of the second air inlet hole is higher than that of the feeding hole in the vertical direction, and the second air inlet pipe stretches into the inner cavity through the second air inlet hole, so that external air can enter the inner cavity through the second air inlet pipe, the crushing effect can be improved, the phenomenon of uneven product granularity is avoided, and the product quality is ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an air mill of the invention;
FIG. 2 is a schematic view of section A-A of FIG. 1.
In the figure: 1-a housing; 2-feeding pipe; 3-a first air inlet pipe; 4-a second air inlet pipe; 5-inner cavity; 6-a feed hole; 7-a first air inlet hole; 8-a second air inlet hole; 9-nozzles; 10-a lower crushing zone; 11-upper crushing zone.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the air mill of the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a gas mill includes: a housing 1, a feed pipe 2, a first air inlet pipe 3 and a second air inlet pipe 4. The housing 1 has a cylindrical inner cavity 5 with an axis extending in a vertical direction, a feed hole 6 is provided in a side wall of the housing 1, and the feed pipe 2 extends into the inner cavity 5 through the feed hole 6, so that external materials can enter the inner cavity 5 through the feed pipe 2. A first air inlet hole 7 is arranged on the side wall of the shell 1, the position of the first air inlet hole 7 is lower than that of the feeding hole 6 along the vertical direction, and the first air inlet pipe 3 extends into the inner cavity 5 through the first air inlet hole 7 so that external air can enter the inner cavity 5 through the first air inlet pipe 3. A second air inlet hole 8 is arranged on the side wall of the shell 1, and the second air inlet hole 8 is higher than the feeding hole 6 in the vertical direction, and the second air inlet pipe 4 extends into the inner cavity 5 through the second air inlet hole 8, so that external air can enter the inner cavity 5 through the second air inlet pipe 4. In actual use, as shown in fig. 1, the gas entering the inner chamber 5 through the first gas inlet pipe 3 forms a lower crushing zone 10 at the lower part of the inner chamber 5 (vertically below the feed pipe 2), and the gas entering the inner chamber 5 through the second gas inlet pipe 4 forms an upper crushing zone 11 at the upper part of the inner chamber 5 (vertically above the feed pipe 2). After the material enters the inner cavity 5 through the feed pipe 2, the material falls down to the lower crushing zone 10 to be crushed by gravity, and at the moment, the part with smaller particle size or smaller specific gravity in the material floats upwards under the action of air flow in the lower crushing zone 10 and floats to the upper crushing zone 11 to be crushed. Therefore, the crushing effect can be improved, the phenomenon of uneven granularity of the product is avoided, and the quality of the product is ensured.
Specifically, the number of the first air inlets 7 is more than two, the more than two first air inlets 7 are sequentially and uniformly distributed along the circumferential direction of the inner cavity 5, and the number of the first air inlets 3 is equal to the number of the first air inlets 7 and corresponds to one another. Such two or more first air intake pipes 3 form one first air intake pipe layer (not shown), and in actual production, two or more first air intake pipe layers arranged at intervals in the vertical direction may be provided to improve the pulverizing effect.
And/or, the number of the second air inlets 8 is more than two, the more than two second air inlets 8 are sequentially and uniformly distributed along the circumferential direction of the inner cavity 5, and the number of the second air inlets 4 is equal to the number of the second air inlets 8 and corresponds to one. Such more than two second air inlet pipes 4 form one second air inlet pipe layer (not shown), and in actual manufacturing, more than two second air inlet pipe layers arranged at intervals along the vertical direction may be provided to improve the crushing effect.
Further, as shown in fig. 1 and 2, a nozzle 9 is also included. A nozzle 9 is connected to the end of the first inlet pipe 3 that protrudes into the inner chamber 5 so that the gas in the first inlet pipe 3 can be injected into the inner chamber 5 through the nozzle 9. In this way, the air flow speed entering the inner cavity 5 through the first air inlet pipe 3 can be increased, so that the crushing effect of the air flow on the materials is improved, and in the same way, a nozzle 9 can be arranged at one end of the second air inlet pipe 4 extending into the inner cavity 5.
Because the materials continuously and stably enter the inner cavity 5 and enter the lower crushing zone 10 under the action of gravity, the ultrasonic airflow is an important precondition for fully utilizing the ultrasonic airflow to crush the materials and reduce the energy consumption, and is also a key for maximally improving the crushing effect and ensuring that the particles have narrower particle size distribution. The feeding pipe 2 can not extend into the casing 1, so that the abrasion of the feeding pipe 2 caused by the material can be reduced, but a part of the material can move near the wall surface of the inner cavity 5 and cannot accurately reach the lower crushing area, so that the crushing effect of the material is affected. The theoretical calculation and the experimental research result analysis are combined, the macroscopic airflow speed in the inner cavity 5 is not high, and the abrasion to the feeding pipe 2 is not serious, so that the feeding pipe 2 can be penetrated into the inner cavity 5 to improve the crushing effect on materials. Specifically, as shown in fig. 1, on a projection perpendicular to the axis of the inner chamber 5, the length of the feed pipe 2 extending into the inner chamber 5 is L1, and l1= (a+1.9×m 2.81) ×d, where M is a mach number corresponding to the flow rate of the gas entering the inner chamber 5 through the first gas inlet pipe 3, d is the equivalent diameter of the injection hole on the nozzle 9, a is a correction value, and 3.ltoreq.a.ltoreq.7. Wherein M is more than or equal to 1 and less than or equal to 6, and preferably M is more than or equal to 1.8 and less than or equal to 4.d is the equivalent diameter of the injection hole on the nozzle 9, and the diameter of a circle having the same cross-sectional area as the gas flow passage on the nozzle 9 is d. The value of the correction value a is related to M, when M is more than 1 and less than or equal to 2.5, a is more than or equal to 3 and less than or equal to 5.2, and when M is more than or equal to 2.5 and less than or equal to 6, a is more than or equal to 5.2 and less than or equal to 7.
Preferably, as shown in FIG. 1, in a section through the axis of the feed pipe 2, the axis of the feed pipe 2 forms an angle α with the side wall of the inner chamber 5 where the feed hole 6 is located and below the feed hole 6, and 15.ltoreq.α.ltoreq.90 °. Wherein the specific value of the included angle alpha is selected to be related to the repose angle of the material, when the repose angle of the material entering the inner cavity 5 is less than or equal to 30 degrees, the angle alpha is more than or equal to 30 degrees and less than or equal to 90 degrees, and when the repose angle of the material entering the inner cavity 5 is more than 30 degrees, the angle alpha is more than or equal to 15 degrees and less than or equal to 60 degrees. Therefore, the characteristics of the materials can be fully combined, unsmooth feeding is avoided, and the materials are ensured to be uniformly, stably and smoothly conveyed to the inner cavity 5.
As an embodiment, as shown in fig. 1, let the intersection point of the axis of the feed pipe 2 and the curved surface of the side wall of the inner cavity 5 be P, the intersection point of the axis of the first air inlet pipe 3 and the curved surface of the side wall of the inner cavity 5 be P1, the distance between the point P and the point P1 be H1 in the vertical direction, and h1=b×l+c×y, where Y is the mohs hardness of the material entering the inner cavity 5, b is a first statistical value, L is the diameter of the inner cavity 5, and c is a second statistical value. Specifically, 1.ltoreq.Y.ltoreq.9, and 0.05.ltoreq.b.ltoreq.0.4; and when Y is more than or equal to 1 and less than or equal to 5, c is more than or equal to 3 and less than or equal to 6, and when Y is more than or equal to 5 and less than or equal to 9, c is more than or equal to 0.05 and less than or equal to 3. Thus, the optimal H1 concrete value can be designed according to the materials with different hardness, so that the materials difficult to crush can be conveyed to the lower crushing zone 10 more, and the crushing probability of the materials is improved.
Further, as shown in fig. 1, let the intersection point of the axis of the second air inlet pipe 4 and the curved surface of the side wall of the inner cavity 5 be P2, and the distance between the point P and the point P2 in the vertical direction be H2, where H1 is equal to or greater than H2 and equal to or less than 4×h1. Therefore, the path length of the part with smaller particle size or smaller specific gravity in the material floating towards the upper crushing zone 11 under the action of the air flow in the lower crushing zone 10 is ensured, the full development of the air flow and the uniform distribution of carried particles are promoted, and an important premise is provided for the nozzle 9 arranged on the second air inlet pipe 4 to exert the supersonic air flow to crush the material efficiently, so that the crushing of the material is enhanced, and particularly, the full and effective crushing of the part of the material with smaller particle size or smaller specific gravity which cannot reach the lower crushing zone 10 is ensured, so that the material can be ensured to have narrower particle size distribution.
As an alternative, as shown in fig. 2, on a projection perpendicular to the axis of the inner chamber 5, a straight line passing through the point P1 and tangential to the inner chamber 5 forms an angle β with the axis of the first intake pipe 3, and 5 ° β is equal to or less than 45 °. So can make the gas that gets into in the inner chamber 5 through first intake pipe 3 form the whirl to the lower crushing zone 10 of the whirl that forms not only can impact crushing to the material through gas, can also carry out the whirl crushing to the material, has further improved crushing effect. In the upward flowing process of the gas, the cyclone effect is achieved, the length of a path and the residence time of upward moving of the gas carrying materials are increased, the probability of collision of particles is increased, and then the crushing effect is improved.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. An air mill, characterized in that:
comprising the following steps: the device comprises a shell (1), a feed pipe (2), a first air inlet pipe (3) and a second air inlet pipe (4);
The shell (1) is provided with a cylindrical inner cavity (5) with an axis extending along the vertical direction, a feeding hole (6) is arranged on the side wall of the shell (1), and the feeding pipe (2) extends into the inner cavity (5) through the feeding hole (6) so that external materials can enter the inner cavity (5) through the feeding pipe (2);
A first air inlet hole (7) is formed in the side wall of the shell (1), the first air inlet hole (7) is lower than the feeding hole (6) in the vertical direction, and the first air inlet pipe (3) extends into the inner cavity (5) through the first air inlet hole (7) so that external air can enter the inner cavity (5) through the first air inlet pipe (3);
A second air inlet hole (8) is formed in the side wall of the shell (1), the second air inlet hole (8) is higher than the feeding hole (6) in the vertical direction, and the second air inlet pipe (4) extends into the inner cavity (5) through the second air inlet hole (8) so that external air can enter the inner cavity (5) through the second air inlet pipe (4);
the device also comprises a nozzle (9), wherein the nozzle (9) is connected to one end of the first air inlet pipe (3) extending into the inner cavity (5) so that the air in the first air inlet pipe (3) can be sprayed into the inner cavity (5) through the nozzle (9);
on a projection perpendicular to the axis of the inner cavity (5), the length of the feeding pipe (2) extending into the inner cavity (5) is L1, and L1= (a+1.9×M 2.81) ×d, wherein M is Mach number corresponding to the flow rate of gas entering the inner cavity (5) through the first air inlet pipe (3), d is the equivalent diameter of an injection hole on the nozzle (9), a is a correction value, and 3 is more than or equal to a is less than or equal to 7;
Setting the intersection point of the axis of the feeding pipe (2) and the curved surface of the side wall of the inner cavity (5) as P, setting the intersection point of the axis of the first air inlet pipe (3) and the curved surface of the side wall of the inner cavity (5) as P1, and setting the distance between the point P and the point P1 as H1 in the vertical direction, wherein H1 = b x L + c x Y, Y is the Mohs hardness of the material entering the inner cavity (5), b is a first statistical value, L is the diameter of the inner cavity (5), and c is a second statistical value;
y is more than or equal to 1 and less than or equal to 9, and b is more than or equal to 0.05 and less than or equal to 0.4;
When Y is more than or equal to 1 and less than or equal to 5, c is more than or equal to 3 and less than or equal to 6, and when Y is more than or equal to 5 and less than or equal to 9, c is more than or equal to 0.05 and less than 3;
And the intersection point of the axis of the second air inlet pipe (4) and the curved surface of the side wall of the inner cavity (5) is P2, and the distance between the point P and the point P2 in the vertical direction is H2, wherein H1 is more than or equal to H2 and less than or equal to 4 multiplied by H1.
2. A gas mill as claimed in claim 1, wherein:
the number of the first air inlets (7) is more than two, the more than two first air inlets (7) are sequentially and uniformly distributed along the circumferential direction of the inner cavity (5), and the number of the first air inlets (3) is equal to the number of the first air inlets (7) and corresponds to one;
And/or, the number of the second air inlets (8) is more than two, the more than two second air inlets (8) are sequentially and uniformly distributed along the circumference of the inner cavity (5), and the number of the second air inlets (4) is equal to the number of the second air inlets (8) and corresponds to one.
3. A gas mill according to claim 1 or 2, characterized in that:
An included angle alpha is formed between the axis of the feeding pipe (2) and the side wall of the inner cavity (5) where the feeding hole (6) is located and below the feeding hole (6) on the section passing through the axis of the feeding pipe (2), and the included angle alpha is more than or equal to 15 degrees and less than or equal to 90 degrees.
4. A gas mill according to claim 3, wherein:
When the repose angle of the material entering the inner cavity (5) is smaller than or equal to 30 degrees, alpha is larger than or equal to 30 degrees and smaller than or equal to 90 degrees;
When the repose angle of the material entering the inner cavity (5) is larger than 30 degrees, the angle alpha is larger than or equal to 15 degrees and smaller than or equal to 60 degrees.
5. A gas mill according to claim 1 or 2, characterized in that:
on a projection perpendicular to the axis of the inner cavity (5), an included angle beta is formed between a straight line passing through the point P1 and tangential to the inner cavity (5) and the axis of the first air inlet pipe (3), and the included angle beta is more than or equal to 5 degrees and less than or equal to 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410194501.1A CN117753527B (en) | 2024-02-22 | 2024-02-22 | Air mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410194501.1A CN117753527B (en) | 2024-02-22 | 2024-02-22 | Air mill |
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| Publication Number | Publication Date |
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| CN117753527A CN117753527A (en) | 2024-03-26 |
| CN117753527B true CN117753527B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410194501.1A Active CN117753527B (en) | 2024-02-22 | 2024-02-22 | Air mill |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB667763A (en) * | 1948-05-21 | 1952-03-05 | Andrew Jackson Fisher | Improvements in or relating to impact pulverizers |
| US6224004B1 (en) * | 1998-06-29 | 2001-05-01 | Minolta Co., Ltd. | Mill provided with partition within milling chamber |
| CN104492576A (en) * | 2014-11-17 | 2015-04-08 | 中国石油集团东北炼化工程有限公司吉林设计院 | Injection fragmentation device and injection fragmentation method |
| CN209885960U (en) * | 2019-03-28 | 2020-01-03 | 赣州嘉通新材料有限公司 | Hierarchical formula neodymium iron boron fluid energy mill of high accuracy |
| JP2020131120A (en) * | 2019-02-20 | 2020-08-31 | 健三 伊藤 | Jet mill and crushing material crushing method using jet mill |
| CN112169963A (en) * | 2020-07-24 | 2021-01-05 | 宁波可可磁业股份有限公司 | Jet mill for neodymium iron boron production and use method thereof |
| CN214262244U (en) * | 2020-12-07 | 2021-09-24 | 优彩科技(湖北)有限公司 | Double-layer twelve-gun staggered nozzle structure of jet mill |
| CN114392819A (en) * | 2022-02-15 | 2022-04-26 | 南京天目超微技术研究开发有限公司 | Multidimensional-jet supersonic airflow crushing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6942170B2 (en) * | 2002-07-23 | 2005-09-13 | Xerox Corporation | Plural odd number bell-like openings nozzle device for a fluidized bed jet mill |
| JP5790042B2 (en) * | 2011-03-11 | 2015-10-07 | 株式会社リコー | Crusher and cylindrical adapter |
-
2024
- 2024-02-22 CN CN202410194501.1A patent/CN117753527B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB667763A (en) * | 1948-05-21 | 1952-03-05 | Andrew Jackson Fisher | Improvements in or relating to impact pulverizers |
| US6224004B1 (en) * | 1998-06-29 | 2001-05-01 | Minolta Co., Ltd. | Mill provided with partition within milling chamber |
| CN104492576A (en) * | 2014-11-17 | 2015-04-08 | 中国石油集团东北炼化工程有限公司吉林设计院 | Injection fragmentation device and injection fragmentation method |
| JP2020131120A (en) * | 2019-02-20 | 2020-08-31 | 健三 伊藤 | Jet mill and crushing material crushing method using jet mill |
| CN209885960U (en) * | 2019-03-28 | 2020-01-03 | 赣州嘉通新材料有限公司 | Hierarchical formula neodymium iron boron fluid energy mill of high accuracy |
| CN112169963A (en) * | 2020-07-24 | 2021-01-05 | 宁波可可磁业股份有限公司 | Jet mill for neodymium iron boron production and use method thereof |
| CN214262244U (en) * | 2020-12-07 | 2021-09-24 | 优彩科技(湖北)有限公司 | Double-layer twelve-gun staggered nozzle structure of jet mill |
| CN114392819A (en) * | 2022-02-15 | 2022-04-26 | 南京天目超微技术研究开发有限公司 | Multidimensional-jet supersonic airflow crushing device |
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| Publication number | Publication date |
|---|---|
| CN117753527A (en) | 2024-03-26 |
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